SY/T 5918-2024 Specifcation for external coating and insulation rehabilitationof buried steel pipeline English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
E
Professional standard of the People's Republic of China
SY/T 5745-2024
Replaces SY/T 5745-2008
Specifcation for external coating and insulation rehabilitation of buried steel pipeline
埋地钢质管道外防腐层及保温层修复技术规范
(English Translation)
Issue date: 2024-12-25 Implementation date: 2025-06-25
Issued by National Development and Reform Commission, P.R.C
Contents
Foreword
1 Scope
2 Normative References
3 Reservoir Protection
4 Oil and Gas Well Completion
5 Reservoir Stimulation Processes
6 Oil and Gas Production Processes
7 Water Injection Processes
8 Water Shutoff and Profile Control
9 Other Production Methods
10 Prevention and Control of Sand, Wax, Scale, Corrosion, and Natural Gas Hydrates
11 Oil, Gas, and Water Well Production Performance Monitoring
12 Energy Saving and Consumption Reduction in Oil, Gas, and Water Well Production
13 Remedial Downhole Operations
14 Prevention and Major Repair of Oil, Gas, and Water Well Casing Damage
15 Offshore Oil and Gas Production
16 Digitalization of Oil and Gas Production
17 Wellbore Integrity
18 Oil and Gas Production Engineering Scheme Design
Chinese Index
English Index
Technical Specification for Rehabilitation of External Anti-corrosion Coatings and Thermal Insulation Layers of Buried Steel Pipelines
1 Scope
This document specifies the technical requirements for materials, construction, and quality inspection for the rehabilitation of external anti-corrosion coatings and thermal insulation layers of onshore buried steel pipelines.
This document applies to the rehabilitation of external anti-corrosion coatings of onshore buried steel pipelines and the local repair of rigid polyurethane foam thermal insulation structures.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 1037 Determination of water vapour transmission rate for plastic film and sheeting — Cup method
GB/T 1040.2 Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics
GB/T 1040.3 Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets
GB/T 1408.1 Insulating materials — Test methods for electric strength — Part 1: Tests at power frequencies
GB/T 1633 Plastics — Determination of Vicat softening temperature (VST)
GB/T 1723 Determination of viscosity of coatings
GB/T 1724 Determination of fineness of grind for paints, varnishes and printing inks
GB/T 1725 Paints, varnishes and plastics — Determination of non-volatile matter content
GB/T 1728 Methods of test for drying time of coatings of paints and putties
GB/T 1842 Test method for environmental stress cracking of polyethylene plastics
GB/T 2411 Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness)
GB/T 2792 Test method for peel strength of adhesive tapes
GB/T 2794 Determination for viscosity of adhesives
GB/T 3682.1 Plastics — Determination of melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics — Part 1: Standard method
GB/T 3854 Test method for hardness of reinforced plastics by means of a Barcol impressor
GB/T 5210 Paints and varnishes — Pull-off test for adhesion
GB/T 5470 Plastics — Determination of the brittleness temperature by impact
GB/T 7124 Adhesives — Determination of tensile lap-shear strength of bonded assemblies (rigid-to-rigid)
GB/T 7689.2 Reinforcement materials — Test methods for woven fabrics — Part 2: Determination of number of yarns per unit length
GB/T 7689.5 Reinforcement materials — Test methods for woven fabrics — Part 5: Determination of glass fibre tensile breaking force and elongation at break
GB/T 8923.1 Preparation of steel substrates before application of paints and related products — Visual assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings
GB/T 9914.1 Test methods for reinforcement products — Part 1: Determination of moisture content
GB/T 9914.2 Test methods for reinforcement products — Part 2: Determination of combustible matter content for glass fibre
GB/T 9914.3 Test methods for reinforcement products — Part 3: Determination of mass per unit area
GB/T 15332 Determination of softening point of hot-melt adhesives — Ball and ring method
GB/T 18370 Glass fibre woven roving
GB/T 18570.3 Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 3: Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method)
GB/T 18570.9 Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 9: Field method for the conductometric determination of water-soluble salts
SY/T 0030 Basic terminology of corrosion and protection for oil and gas fields and pipelines
SY/T 0324 Technical specification of heat insulation for directly buried high temperature steel pipeline
SY/T 0414 Standard of polyethylene tape coating for steel pipeline
SY/T 0457 Technical specification of internal liquid epoxy coating for steel pipeline
SY/T 4106 Technical specification of solvent-free polyurethane coatings for steel pipelines and tanks
SY/T 4113.1 Test methods for properties of pipeline anti-corrosion coatings — Part 1: Scratch resistance test
SY/T 4113.2 Test methods for properties of pipeline anti-corrosion coatings — Part 2: Peel strength test
SY/T 4113.3 Test methods for properties of pipeline anti-corrosion coatings — Part 3: Cathodic disbonding test
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in SY/T 0030 and the following apply.
3.1
span length
The length of the pipeline between the inner boundaries of two adjacent supports after full excavation.
3.2
exposed length
The length of the pipeline section exposed after excavation, including fully exposed and partially exposed sections.
3.3
total exposed length between heating stations
The cumulative sum of the exposed pipeline lengths between two adjacent heating stations.
3.4
backfill length
The total length of the pipeline that has been repaired and backfilled between two adjacent heating stations for oil pipelines within the same repair season.
3.5
continuous rehabilitation
The operation of excavating pipelines continuously and simultaneously for anti-corrosion coating repair work.
3.6
pipe condensation
The phenomenon of moisture condensation occurring on the pipe surface when the ambient humidity is relatively high and the pipe body temperature is lower than the ambient dew point temperature.
4 General Principles and Requirements
4.1 A rehabilitation plan shall be formulated before repair, and its content shall at least include material selection, construction process, quality inspection requirements, and safety assurance measures.
4.2 When defect points in the pipeline section requiring repair are concentrated and continuous, combined repair should be carried out.
4.3 Repair of the anti-corrosion coating/thermal insulation layer shall be carried out after the repair of metal pipe body defects.
4.4 When the pipe wall temperature is below 3°C above the dew point, relative humidity exceeds 85%, or during blowing sand, rain, or snow weather, effective protective measures shall be taken before the construction of the anti-corrosion coating/thermal insulation layer.
4.5 The repair and quality inspection of pipeline anti-corrosion coatings and thermal insulation layers shall be carried out by units or personnel with relevant qualifications. Operators shall be trained before formal repair.
4.6 For concealed works involved in the repair of the anti-corrosion coating/thermal insulation layer, an integrity inspection shall be carried out before backfilling with soil.
4.7 When the pipeline anti-corrosion coating deteriorates and cathodic protection is uneconomical, continuous rehabilitation of the pipeline anti-corrosion coating should be considered.
SY/T 5918-2024, SY 5918-2024, SYT 5918-2024, SY/T5918-2024, SY/T 5918, SY/T5918, SY5918-2024, SY 5918, SY5918, SYT5918-2024, SYT 5918, SYT5918
Introduction of SY/T 5918-2024
SY/T 5918-2024 Specifcation for external coating and insulation rehabilitationof buried steel pipeline English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
E
Professional standard of the People's Republic of China
SY/T 5745-2024
Replaces SY/T 5745-2008
Specifcation for external coating and insulation rehabilitation of buried steel pipeline
埋地钢质管道外防腐层及保温层修复技术规范
(English Translation)
Issue date: 2024-12-25 Implementation date: 2025-06-25
Issued by National Development and Reform Commission, P.R.C
Contents
Foreword
1 Scope
2 Normative References
3 Reservoir Protection
4 Oil and Gas Well Completion
5 Reservoir Stimulation Processes
6 Oil and Gas Production Processes
7 Water Injection Processes
8 Water Shutoff and Profile Control
9 Other Production Methods
10 Prevention and Control of Sand, Wax, Scale, Corrosion, and Natural Gas Hydrates
11 Oil, Gas, and Water Well Production Performance Monitoring
12 Energy Saving and Consumption Reduction in Oil, Gas, and Water Well Production
13 Remedial Downhole Operations
14 Prevention and Major Repair of Oil, Gas, and Water Well Casing Damage
15 Offshore Oil and Gas Production
16 Digitalization of Oil and Gas Production
17 Wellbore Integrity
18 Oil and Gas Production Engineering Scheme Design
Chinese Index
English Index
Technical Specification for Rehabilitation of External Anti-corrosion Coatings and Thermal Insulation Layers of Buried Steel Pipelines
1 Scope
This document specifies the technical requirements for materials, construction, and quality inspection for the rehabilitation of external anti-corrosion coatings and thermal insulation layers of onshore buried steel pipelines.
This document applies to the rehabilitation of external anti-corrosion coatings of onshore buried steel pipelines and the local repair of rigid polyurethane foam thermal insulation structures.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 1037 Determination of water vapour transmission rate for plastic film and sheeting — Cup method
GB/T 1040.2 Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics
GB/T 1040.3 Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets
GB/T 1408.1 Insulating materials — Test methods for electric strength — Part 1: Tests at power frequencies
GB/T 1633 Plastics — Determination of Vicat softening temperature (VST)
GB/T 1723 Determination of viscosity of coatings
GB/T 1724 Determination of fineness of grind for paints, varnishes and printing inks
GB/T 1725 Paints, varnishes and plastics — Determination of non-volatile matter content
GB/T 1728 Methods of test for drying time of coatings of paints and putties
GB/T 1842 Test method for environmental stress cracking of polyethylene plastics
GB/T 2411 Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness)
GB/T 2792 Test method for peel strength of adhesive tapes
GB/T 2794 Determination for viscosity of adhesives
GB/T 3682.1 Plastics — Determination of melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics — Part 1: Standard method
GB/T 3854 Test method for hardness of reinforced plastics by means of a Barcol impressor
GB/T 5210 Paints and varnishes — Pull-off test for adhesion
GB/T 5470 Plastics — Determination of the brittleness temperature by impact
GB/T 7124 Adhesives — Determination of tensile lap-shear strength of bonded assemblies (rigid-to-rigid)
GB/T 7689.2 Reinforcement materials — Test methods for woven fabrics — Part 2: Determination of number of yarns per unit length
GB/T 7689.5 Reinforcement materials — Test methods for woven fabrics — Part 5: Determination of glass fibre tensile breaking force and elongation at break
GB/T 8923.1 Preparation of steel substrates before application of paints and related products — Visual assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings
GB/T 9914.1 Test methods for reinforcement products — Part 1: Determination of moisture content
GB/T 9914.2 Test methods for reinforcement products — Part 2: Determination of combustible matter content for glass fibre
GB/T 9914.3 Test methods for reinforcement products — Part 3: Determination of mass per unit area
GB/T 15332 Determination of softening point of hot-melt adhesives — Ball and ring method
GB/T 18370 Glass fibre woven roving
GB/T 18570.3 Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 3: Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method)
GB/T 18570.9 Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 9: Field method for the conductometric determination of water-soluble salts
SY/T 0030 Basic terminology of corrosion and protection for oil and gas fields and pipelines
SY/T 0324 Technical specification of heat insulation for directly buried high temperature steel pipeline
SY/T 0414 Standard of polyethylene tape coating for steel pipeline
SY/T 0457 Technical specification of internal liquid epoxy coating for steel pipeline
SY/T 4106 Technical specification of solvent-free polyurethane coatings for steel pipelines and tanks
SY/T 4113.1 Test methods for properties of pipeline anti-corrosion coatings — Part 1: Scratch resistance test
SY/T 4113.2 Test methods for properties of pipeline anti-corrosion coatings — Part 2: Peel strength test
SY/T 4113.3 Test methods for properties of pipeline anti-corrosion coatings — Part 3: Cathodic disbonding test
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in SY/T 0030 and the following apply.
3.1
span length
The length of the pipeline between the inner boundaries of two adjacent supports after full excavation.
3.2
exposed length
The length of the pipeline section exposed after excavation, including fully exposed and partially exposed sections.
3.3
total exposed length between heating stations
The cumulative sum of the exposed pipeline lengths between two adjacent heating stations.
3.4
backfill length
The total length of the pipeline that has been repaired and backfilled between two adjacent heating stations for oil pipelines within the same repair season.
3.5
continuous rehabilitation
The operation of excavating pipelines continuously and simultaneously for anti-corrosion coating repair work.
3.6
pipe condensation
The phenomenon of moisture condensation occurring on the pipe surface when the ambient humidity is relatively high and the pipe body temperature is lower than the ambient dew point temperature.
4 General Principles and Requirements
4.1 A rehabilitation plan shall be formulated before repair, and its content shall at least include material selection, construction process, quality inspection requirements, and safety assurance measures.
4.2 When defect points in the pipeline section requiring repair are concentrated and continuous, combined repair should be carried out.
4.3 Repair of the anti-corrosion coating/thermal insulation layer shall be carried out after the repair of metal pipe body defects.
4.4 When the pipe wall temperature is below 3°C above the dew point, relative humidity exceeds 85%, or during blowing sand, rain, or snow weather, effective protective measures shall be taken before the construction of the anti-corrosion coating/thermal insulation layer.
4.5 The repair and quality inspection of pipeline anti-corrosion coatings and thermal insulation layers shall be carried out by units or personnel with relevant qualifications. Operators shall be trained before formal repair.
4.6 For concealed works involved in the repair of the anti-corrosion coating/thermal insulation layer, an integrity inspection shall be carried out before backfilling with soil.
4.7 When the pipeline anti-corrosion coating deteriorates and cathodic protection is uneconomical, continuous rehabilitation of the pipeline anti-corrosion coating should be considered.
